--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/Toolbox/ParsedDicomDataset.cpp	Tue Jul 07 16:21:02 2020 +0200
@@ -0,0 +1,104 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "ParsedDicomDataset.h"
+
+#include <dcmtk/dcmdata/dcfilefo.h>
+
+namespace OrthancStone
+{
+  static DcmItem* LookupPath(Orthanc::ParsedDicomFile& dicom,
+                             const DicomPath& path)
+  {
+    DcmItem* node = dicom.GetDcmtkObject().getDataset();
+      
+    for (size_t i = 0; i < path.GetPrefixLength(); i++)
+    {
+      const Orthanc::DicomTag& tmp = path.GetPrefixTag(i);
+      DcmTagKey tag(tmp.GetGroup(), tmp.GetElement());
+
+      DcmSequenceOfItems* sequence = NULL;
+      if (!node->findAndGetSequence(tag, sequence).good() ||
+          sequence == NULL)
+      {
+        return NULL;
+      }
+
+      unsigned long pos = path.GetPrefixIndex(i);
+      if (pos >= sequence->card())
+      {
+        return NULL;
+      }
+
+      node = sequence->getItem(pos);
+      if (node == NULL)
+      {
+        return NULL;
+      }
+    }
+
+    return node;
+  }
+
+    
+  bool ParsedDicomDataset::GetStringValue(std::string& result,
+                                          const DicomPath& path) const
+  {
+    DcmItem* node = LookupPath(dicom_, path);
+      
+    if (node != NULL)
+    {
+      DcmTagKey tag(path.GetFinalTag().GetGroup(), path.GetFinalTag().GetElement());
+
+      const char* s = NULL;
+      if (node->findAndGetString(tag, s).good() &&
+          s != NULL)
+      {
+        result.assign(s);
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+
+  bool ParsedDicomDataset::GetSequenceSize(size_t& size,
+                                           const DicomPath& path) const
+  {
+    DcmItem* node = LookupPath(dicom_, path);
+      
+    if (node != NULL)
+    {
+      DcmTagKey tag(path.GetFinalTag().GetGroup(), path.GetFinalTag().GetElement());
+
+      DcmSequenceOfItems* s = NULL;
+      if (node->findAndGetSequence(tag, s).good() &&
+          s != NULL)
+      {
+        size = s->card();
+        return true;
+      }
+    }
+
+    return false;
+  }
+}